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The water pump impeller on a 7.5 hp Mercury outboard, is located on top of the gearcase, and is driven by the driveshaft.

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You will notice on the throttle handle that there are three positions on the legend. "Really Slow", "Start" and "Slow".

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for most of these motors any tech manual from Johnson would mostly cover 90% of all of you questions...

however wiring schematics are very diffrent and I have been looking for a wiring diagram for a Johnson stinger II motor, not included in any recent manuals, so if anyone knows where to find one let me know

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Find the GPH of your fresh water pump and model #, see if Shurflo, Jabsco or whatever brand you have, has a better one. Also make sure you check the filter ( if it has one ) and the Screens on the faucets for debris and clean if needed.

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approx, 220 lbs

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The plug gap for a 94 model, 50 hp Johnson is .030-.035 in.

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The 1996 model, 175 hp Evinrude outboard spark plug recommendations......

Champion Ql78YC gapped at .030

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A 3.5hp outboard will give you 8mph tops, which would be a normal walk to a slow jog.

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50-1 mix for 125 force 1989

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Johnson outboard, model number J15RCNC, is a 1982 year model.

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The 1957 model, 18 hp Johnson outboard, requires an Champion J4C, or NGK B8S, gapped to .030 in.

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alot

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The recommended spark plug for the 1977 model, 7.5 hp Mercury outboard is a Champion L78V, or NGK BUHW-2. Both brands are Perma Gap type plugs, with the Champion being the manufacturer supplied plug back in 1977.

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24:1 fuel / oil mix. OMC didn't go to 50:1 until around 1962/63. That outboard was equipped with the 2 line pressure tank system. I would update with a fuel pump that they put on some 1958 and all 1959 models so you can run it off any fuel tank if it hasn't already been done.

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1981 : SN 5713689 1980 : SN 55XXXXX to 56XXXXX 1981 : SN 57XXXXX to 58XXXXX 1982 : SN 59XXXXX to 61XXXXX hope this helps you out . here is the site link where i got the info . happy boating http://www.marineengine.com/parts/sierra_parts/8024/catalog.html?http://www.marineengine.com/parts/sierra_parts/8024/mercury_mariner.html?gclid=COX39_Po3JACFUV0OAodJUZ7Ww

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The Lenko brand trim cylinders themselves, are electric, rather than the hydraulic, which have been around for years. In most cases that I have seen this, water entering one, or both, actuators is the culprit. It is also possible that a section of lead wire has been bared, causing a shorting situation. The actuators are shipped with bullet connectors on the lead ends, so that disconnecting for troubleshooting is simplified. If you activate the trim switch, with the actuators disconnected, and still blow fuses, then you can deduce that the problem is forward of the actuators, in the lead wire, or switch itself.

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Invented in New Zealand by a man named Hamilton. Hence well known Hamilton jets.

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Through the 2017 season, the following players have hit 600 or more career home runs (active players in bold caps):
1. Barry Bonds - 762
2. Hank Aaron - 755
3. Babe Ruth - 714
4. Alex Rodriguez - 696
5. Willie Mays - 660
6. Ken Griffey Jr. - 630
7. ALBERT PUJOLS - 610
8. Jim Thome - 612
9. Sammy Sosa - 609 10. Frank Robinson -- 586

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That depends on what type of usage you have in mind: For example, if you just want something to get you around the marina, 1.5 - 3.0 hp would be fine. If you want power on the open ocean when the winds are gone, you'll want something that is large enough to make headway without rattling the spine to pieces.

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yes

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NGK B7HS-10 - Plug Gap 0.9 mm/0.035 inFits 6 ('86 - '00), 8 ('86 - '04), Fits 9.9/15 ('84 - '04), 20 ('96 - '97), 25 ('84 - '04 2 cyl.), 25 ('96 - '02 3 cyl.), 30 ('87 - '02 3 cyl.), 40 ('84 - '04), C40 ('97 - '02 3 cyl.)

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You should watch your wake when operating a boat near other boats or when entering a congested area because the wake may cause personal injury or damage from your wake hitting the other vessels and throwing the people around or equipment. Also, It is common courtesy to stay far enough away from them.

It is also important to mind your wake as there may be swimmers nearby, or fisherman who would prefer calmer waters. Furthermore, aside from watching your wake near other boaters, you also need to watch your speed in low wake zones, as seawalls can be damaged by the continual waves pounding against them.

The "wake" is the wave left behind as your boat moves forward, its size depends on your speed.

In congested areas the wave of the wake causes other boats to move and can make people fall.

"Watch your wake" means "reduce your speed" so that you do not endanger people.

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The 1990 model, 150 hp Evinrude outboard has a listed dry weight of 365 - 393 lbs, depending on the particular model.

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This question is like comparing Mercury to Evinrude, it would depend on personal preference. Generally, any brand name, TC-W3 rated 2 stroke oil, blended for outboard use will work. It is also a good idea not to mix different brands of oil in the oil tank of oil injected engines.